How safe are we posting on here? i am a newbie lol and not legal to grow here

It depends on your comfort level. In this age you can assume that anything you do electronically is being monitored and recorded by a government agency like the NSA. But there is some safety in knowing that marijuana is currently on a rising tide of popularity and it's insanely popular. Governments are mainly looking for serious criminal threats not someone trying to help with chronic pain, PTSD or calm your shaking hands. The big thing is to keep your mouth shut locally. Don't act like a stereotypical pothead in the movies when out around town. Don't tell ANYONE (neighbors, friends, family... NOBODY) that you are growing and certainly do not sell anything. I personally do not think "they" will use online activity to initiate an investigation or prosecution. But, if you were one of the people live streaming as you stormed the US Capitol then your online admissions might be used against you.